Correlated Dirac semimetallic state with unusual positive magnetoresistance in strain-free perovskite SrIrO3

J. Fujioka, T. Okawa, A. Yamamoto, Y. Tokura

研究成果: Article査読

35 被引用数 (Scopus)

抄録

We investigated magnetotransport properties and charge dynamics of strain-free perovskite SrIrO3. Both the longitudinal and transverse magnetoresistivity (MR) are significantly enhanced with decreasing temperature, in accord with the evolution of the Dirac semimetallic state. The electron correlation effect in the Dirac state shows up as a dramatic change in charge dynamics with temperature and as an enhanced paramagnetic susceptibility. We propose that the field-induced topological transition of the Dirac node coupled to the enhanced paramagnetism causes the unique MR of correlated Dirac electrons.

本文言語English
論文番号121102
ジャーナルPhysical Review B
95
12
DOI
出版ステータスPublished - 2017 3月 3
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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